Fire behavior and design of steel columns reinforced by prestressed CFRP strips

Influence of Material Models on Predicting the Fire Behavior of Steel Columns

Fire Technology ◽

10.1007/s10694-016-0568-4 ◽

2016 ◽

Vol 53 (1) ◽

pp. 375-400 ◽

Cited By ~ 8

Author(s):

Lisa Choe ◽

Chao Zhang ◽

William E. Luecke ◽

John L. Gross ◽

Amit H. Varma

Keyword(s):

Fire Behavior ◽

Material Models ◽

Steel Columns

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The Finite Element Analysis for Concrete Filled Steel Columns under Blast Load

10.20944/preprints201610.0046.v1 ◽

2016 ◽

Author(s):

Fereydoon Omidinasab ◽

Peyman Beiranvand ◽

Saeideh Sadeghi Golmakani ◽

Mohammad Zarei

Keyword(s):

Blast Resistance ◽

Fire Behavior ◽

Steel Tube ◽

Absorption Capacity ◽

Blast Load ◽

Energy Absorption Capacity ◽

Element Analysis ◽

Steel Columns ◽

Concrete Confinement ◽

The Finite Element Analysis

Concrete-filled steel columns have been extensively used in the world due to having all suitable characteristics of concrete and steel, more ductility, increasing concrete confinement using steel wall, large energy-absorption capacity and appropriate fire behavior. In present paper, concrete-filled steel square columns have been simulated under the influence of blast load using ABAQUS software. These responses will be compared for scaled distances based on the distance to source and weight of explosive material. As result, it can be seen that although concrete deformation has been restricted using steel tube, but inner layer of concrete has been seriously damaged and column displacement will be decreased by increasing scaled distance. We also concluded that concrete-filled steel columns have high ductility and blast resistance.

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Experimental and numerical study on post-fire behavior of high-strength Q460 steel columns

Advances in Structural Engineering ◽

10.1177/1369433216649390 ◽

2016 ◽

Vol 19 (12) ◽

pp. 1873-1888 ◽

Cited By ~ 2

Author(s):

Weiyong Wang ◽

Tianzi Liu

Keyword(s):

Finite Element ◽

Bearing Capacity ◽

Fire Behavior ◽

High Strength ◽

Finite Element Models ◽

Load Bearing Capacity ◽

Steel Columns ◽

Standard Fire ◽

Heating And Cooling ◽

High Strength Q460 Steel

Experimental study and finite element modeling on the structural behavior of high-strength Q460 steel columns after being exposed to ISO-834 standard fire are presented. Two section shapes were considered, namely welded H-shaped section and welded box-section. The experiment composes of two stages: heating and cooling stage of the specimens and compressive test on the specimen after fire exposure. The temperatures experienced in the specimens were recorded during both the heating and cooling phases, as well as the load–deflection curves, load–axial displacement curves, load–rotation curves, load–strain curves, and failure modes in the steel columns were measured during the compressive tests. Three-dimensional finite element models were also established by employing the program ANSYS to study the post-fire behavior of high-strength Q460 steel columns. The finite element models were used to investigate the effects of key parameters on the residual load-bearing capacity of high-strength Q460 steel columns, following exposure to the ISO-834 standard fire. The investigated parameters included heating time, cooling methods, and slenderness ratio. Finally, a simplified design approach was proposed for predicting the residual load-bearing capacity of high-strength Q460 steel columns after being exposed to ISO-834 standard fire.

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